<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>

    <style>
        #container {
            text-align: center;
        }
        #content {
            position: relative;
            width: 640px;
            margin: auto;
        }
        #canvas {
            position: absolute;
        }


    </style>
</head>
<body>

<div id="container">
    <h1>姚格格 明年进蘑菇街</h1>
    <div id="content">
        <canvas id="canvas"></canvas>
        <video src="ygg.mp4"  width="640" height="380" controls ></video>
        <input type="text" /> <button>添加弹幕</button>
        <input type="color" /><input  type="range" max="40" min="20" />
    </div>
</div>

</body>
</html>